Liquid Doom Server
index
This server is here since fall of 2006 and it become home of multiplayer for Doom. You can start fragging in ZDaemon (primarily) and also in Odamex, Chocolate, Crispy and Woof servers.
For start you can try all available alpha/beta/shareware versions of Doom, Heretic, Hexen and Strife (it's a DosBox package):
News
Radio
24/7 DooM radio stream is online!! More than 2600 songs are in playlist.